Zobrazeno 1 - 10
of 224
pro vyhledávání: '"tunnel blasting"'
Publikováno v:
Alexandria Engineering Journal, Vol 108, Iss , Pp 1011-1031 (2024)
Optimizing blasting parameters is of paramount importance in minimizing overbreak during tunneling. Hence, this paper proposed an intelligent approach, which integrates separate parameter optimization based on varying rock mass qualities, with the ob
Externí odkaz:
https://doaj.org/article/4896212d44b94445a66b2cfda037fb33
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03805- (2024)
Explosive blasting in tunnel construction may provoke damage to the surrounding rocks, leading to economic and safety concerns. While studies on rock fragmentation mechanisms exist, the innovative mechanism of shaped charge hydrostatic blasting remai
Externí odkaz:
https://doaj.org/article/71549a82cba742c4ba6f08bc0fa5328c
Autor:
Min-Seong Kim, Sean Seungwon Lee
Publikováno v:
Underground Space, Vol 16, Iss , Pp 18-28 (2024)
The long and large diameter uncharged hole boring (LLB) method is a cut blasting method that minimizes blast-induced vibrations by creating long and large diameter uncharged holes at the excavation face of tunnels prior to tunnel excavation. Drilling
Externí odkaz:
https://doaj.org/article/0b6f4b765c534dd9b84b82d6835adbdd
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract The lining structures of tunnels are typically constructed using sprayed or cast concrete materials, and their performance and quality during tunnel excavation and blasting are crucial for the stability and safety of tunnels. Therefore, the
Externí odkaz:
https://doaj.org/article/33c6dc54212744b5a716767b3e4af3f7
Damage and reliability analysis of double-arch tunnel without a middle pilot tunnel under blast load
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-20 (2024)
Abstract In this study, a new type of multi-arch tunnel construction method is proposed. This effort is undertaken due to the many disadvantages of the traditional multi-arch tunnel construction method. Furthermore, this method omits the construction
Externí odkaz:
https://doaj.org/article/8e75fd612cff4da4bfa0a19999faa266
Publikováno v:
Applied Sciences, Vol 14, Iss 21, p 9791 (2024)
To meet the increasing demand for rapid and efficient evaluation of tunnel blasting quality, this study presents a comprehensive review of the current state of the art in tunnel blasting evaluation, organized into five key areas: Blasting Techniques
Externí odkaz:
https://doaj.org/article/92705f9a52af4787bb6c161a34830181
Publikováno v:
Applied Sciences, Vol 14, Iss 19, p 9112 (2024)
The safety assessment and control of large-diameter pipelines under tunnel blasting at ultrasmall clear distances is a significant problem faced in construction. However, there has been no reference case for the quantitative comparison of the disturb
Externí odkaz:
https://doaj.org/article/5bc8ae1a7ea74ffc94b040615d2ffc56
Publikováno v:
工程科学学报, Vol 45, Iss 11, Pp 1820-1832 (2023)
“Cutting is the key to speed” in rock roadway excavation. With the aim of addressing the challenges related to broken rock disposal, low single-cycle penetration, and high block rate in the conventional straight hole and diagonal hole excavation
Externí odkaz:
https://doaj.org/article/65fddd4bc2ce4c04b78b8e8eb864c7a6
Publikováno v:
Shuiwen dizhi gongcheng dizhi, Vol 50, Iss 6, Pp 129-136 (2023)
To solve the optimization problem of blasting parameters and consider the influence of interaction between blastholes on the spatial distribution of surrounding rock damage, the Riedel-Hiermaier-Thoma constitutive model parameters of marble were firs
Externí odkaz:
https://doaj.org/article/06126dec97d44d66b2d830a2aa9e809a
Publikováno v:
Applied Sciences, Vol 14, Iss 14, p 6152 (2024)
The significance of predicting the dynamic response and damage of an existing concrete tunnel during underground blasting has increased owing to the close proximity between the newly built and existing tunnels. Peak particle velocity (PPV) is a commo
Externí odkaz:
https://doaj.org/article/236345f7fa974480b0dd1ba1e0bd5b97